JPH01198415A - Method and apparatus for continuously melting scrap - Google Patents
Method and apparatus for continuously melting scrapInfo
- Publication number
- JPH01198415A JPH01198415A JP63318329A JP31832988A JPH01198415A JP H01198415 A JPH01198415 A JP H01198415A JP 63318329 A JP63318329 A JP 63318329A JP 31832988 A JP31832988 A JP 31832988A JP H01198415 A JPH01198415 A JP H01198415A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- take
- ladle
- scrap
- passage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 22
- 238000002844 melting Methods 0.000 title claims description 6
- 230000008018 melting Effects 0.000 title claims description 6
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 17
- 238000000605 extraction Methods 0.000 claims abstract description 9
- 239000000155 melt Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000012768 molten material Substances 0.000 claims description 5
- 229910000805 Pig iron Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 5
- 239000010959 steel Substances 0.000 abstract 5
- 241001062472 Stokellia anisodon Species 0.000 abstract 2
- 239000002994 raw material Substances 0.000 abstract 1
- 238000007670 refining Methods 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000010309 melting process Methods 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/56—Manufacture of steel by other methods
- C21C5/567—Manufacture of steel by other methods operating in a continuous way
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は転炉内でスクラップおよび銑鉄のいずれか一方
または双方を連続的にＦａ議する方法ならびにこの方法
を実施する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for continuously converting scrap and/or pig iron into Fa in a converter, and an apparatus for implementing this method.
［従来の技術］
スクラップが予熱または溶融されるか、予熱しかつ溶融
される非自熱的な（ａｌｌｏｔｈｅｒａｉｃ ）転炉工
程はすでに公知であり、そのような工程は任意に銑鉄を
添加して実施されることはない。[Prior Art] Allotheraic converter processes in which scrap is preheated or melted or preheated and melted are already known, and such processes can optionally be carried out with the addition of pig iron. It will not be done.
［発明が解決しようとする問題点］
そのような工程を実施するため高価な傾斜可能な炉が提
案されたが、公知の工程のいちじるしい欠点は、坩堝が
溶融した材料をａｍ的に排出する装置を備えていないた
め、それらがバッチ式に不連続的に実施されたことであ
る。[Problem to be Solved by the Invention] Although expensive tiltable furnaces have been proposed for carrying out such a process, a notable drawback of the known process is that the crucible is not equipped with a device for amperately discharging the molten material. The reason for this is that they were carried out batch-wise and discontinuously.
公□知のスクラップおよび溶融材料の一方または双方を
予熱する非白熱的な（８％１ｏｔｈｅｒｖｉｃ ）炉の
加熱は、一般に、底部溜りに炭素および酸素の混合物を
吹込む底部ノズルにより、または上方か・ら導入された
ランスにより酸素と一緒に燃料を吹込むことによって実
施された。Heating of conventional non-incandescent (8% 1othervic) furnaces for preheating either or both of the scrap and molten material is generally carried out by means of a bottom nozzle blowing a mixture of carbon and oxygen into the bottom sump, or by means of an upper This was done by injecting fuel together with oxygen through a lance introduced from the factory.
いわゆるＫＶＡ−法は金属装入物ならびに炭素および添
加物によって実施され、このＫＶＡ４においては必要な
溶解熱を天然ガスおよび酸素によって運転されるバーナ
によって供給することが公知である。ＫＶＡ−法に対し
て現在までに提案された溶解炉は底部に取出孔を備える
が、しかしながら、この取出孔は連続作業を簡単にでき
るようにするものでない。これら公知の方法において、
可動とりべを取出孔下方の位置に移動し、そこで溶融液
ならびにスラグを一緒に排出し、ついでとりべからスラ
グを除去することはすでに可能であった。取出孔は容器
底部に設けられたため、少量のスラグだけが溶融物容器
内に、または傾斜可能な溶融坩堝の場合でさえも別々に
溶融坩堝内に保持され、溶融工程を連続して実施すると
き、一定品質を得るためには、対応する出のスラグが製
造されなければならなかった。The so-called KVA process is carried out with metal charges as well as carbon and additives, and it is known that in KVA4 the necessary heat of fusion is supplied by a burner operated with natural gas and oxygen. The melting furnaces proposed to date for the KVA-process are equipped with a take-off hole in the bottom, but this take-off hole does not facilitate continuous operation. In these known methods,
It was already possible to move the movable ladle into a position below the extraction hole, there to discharge the melt as well as the slag together, and then to remove the slag from the ladle. The withdrawal hole was provided at the bottom of the vessel, so that only a small amount of slag is retained in the melt vessel or separately in the melting crucible, even in the case of tiltable melting crucibles, when carrying out the melting process in succession. , in order to obtain a certain quality, a corresponding slag had to be produced.
本発明は、連続的に溶融工程を実施することができまた
溶融液を一定品質にする、上記型の方払を得ることにあ
る。The object of the invention is to obtain a method of the above-mentioned type which allows the melting process to be carried out continuously and which provides a constant quality of the melt.
Ｅ問題点を解決するための手段］
上記の目的を達成するため、本発明による方法は転炉が
底部付近で火炎をほぼ半径方向に転炉内部に向ける不完
全燃焼バーナによって加熱されること、燃焼を完了する
ため二次空気または酸素がバーナ平面上方のある距離に
供給されること、溶融物が場合によりスラグとともに転
炉の横方向に接続された取出装置を通して可動とりべに
排出されること、および転炉がとりべ交換のため溶融材
料の高さが取出孔の高さの下になる位置まで揺動するこ
とより成っている。火炎をほぼ半径方向に転炉内部に向
けた不完全燃焼バーナによって底部付近で加熱されるた
め、天然ガスと酸素との０１合は、とくに天然ガスおよ
び酸素で作動されるバーナを使用するとき、所要の火炎
温度および所要の酸化度が得られるように制御される。Means for Solving Problem E] To achieve the above object, the method according to the invention provides that the converter is heated near the bottom by an incomplete combustion burner which directs the flame approximately radially into the converter interior; Secondary air or oxygen is supplied at a distance above the burner plane to complete the combustion, and the melt is discharged, possibly together with slag, through a take-off device connected laterally to the converter into a movable ladle. , and the converter is oscillated to a position where the height of the molten material is below the height of the outlet hole for ladle replacement. 01 combination of natural gas and oxygen, especially when using burners operated with natural gas and oxygen, since it is heated near the bottom by an incomplete combustion burner that directs the flame approximately radially inside the converter. It is controlled to obtain the required flame temperature and the required degree of oxidation.
不完全燃焼バーナの使用は鉄の生産を改善し酸化損失を
減少する。燃焼完了のため二次空気または酸素のバーナ
平面上方のある距離に供給するため、化学的に結合され
る熱はほとんど完全に利用され、連続的に供給される装
入物は十分予熱され、工程＄よ加速される。燃料の未燃
焼部分は、これらの後燃焼ノズル内でできるだ番す燃焼
に使用される制御可能な空気の山により、柱状のスクラ
ップはこのようにして予熱される。場合によりスラグと
ともに、転炉に接続された取出装置を通して可動とりべ
内に、溶融物を排出するため、揺動するとき十分な量の
スラグを転炉内に保持することができるようになり、連
続溶融工程は可動とりべを交換した後、そして転炉がち
との位置に傾斜した後、決して混乱することはない。場
合により溶融液とともに排出されたスラグは、転炉直ト
に誼かれたうけ入れとりべにおいて分離され、横に突出
する取出装置は小さい傾斜角の場合十分な容積のスラグ
を転炉内に保持することができる。とりべを交換すると
き溶融工程をうける金属材料を転炉内に保持することが
でき、それにより工程の連続性が維持される。The use of incomplete combustion burners improves iron production and reduces oxidation losses. By supplying secondary air or oxygen at a distance above the burner plane for completion of combustion, the chemically combined heat is almost completely utilized and the continuously supplied charge is well preheated and the process It will be accelerated by $. The column of scrap is thus preheated by a controllable pile of air in which the unburned part of the fuel is used for the recurrent combustion that takes place in these post-combustion nozzles. The melt is discharged, possibly together with the slag, into a movable ladle through a take-out device connected to the converter, so that a sufficient amount of slag can be retained in the converter when rocking. The continuous melting process is never disrupted after changing the movable ladle and tilting the converter into the gutter position. The slag discharged with the melt, if necessary, is separated in a receiving ladle installed directly into the converter, and a laterally projecting take-off device retains a sufficient volume of slag in the converter at a small angle of inclination. can do. The metal material undergoing the melting process can be retained in the converter when changing the ladle, thereby maintaining process continuity.
そのためにはとりべを交換するとき溶融物の高さが取出
孔の下になる位置まで耘かを傾斜することで十分である
。For this purpose, it is sufficient to tilt the ladle to a position where the height of the melt is below the removal hole when changing the ladle.
本発明の方法を実施するｉｉＫ置は転炉を有し、はぼ半
径方向に延びる多数のバーナノズルが転炉の底部付近に
ある平面内で転炉に設けられること、および空気ノズル
がそれより高い所にある別の平面内に設けられることお
よび突出型取出装置が半径方向取出孔を通して転炉に接
続されていることを特徴とする。本発明による装置に対
して、突出型取出装置が半径方向取出孔によって転炉に
接続されていることは重要であり、前記取出装置は、小
さい傾斜角の場合でも滴下を可能とすることなしに、と
りべの交換に関する限り傾斜作用の運動を改善する。こ
の実施例はさらに、突出型取出装置が転炉の半径方向取
出孔と整合するほぼ半径方向取出装置を４−ｉすること
および転炉軸線に対してほぼ平行に延びる取出通路がほ
ぼ半径方向の通路に接続されるように構成されることが
有利であり、取出装置内の通路の角度的配置がとりべを
交換するとき小さい傾斜角だけに関係があるようにする
ことができかつ工程の連続性を保訂する補助設備を配置
することができるようにする。好ましい一層の改善は、
主として突出型取出装置が火炎が内通路のそれぞれ一方
に向けられる少なくとも１つのバーナを備えることであ
る。突出型取出装置に接続されるそのようなバーナは、
とりべ交換作業の間通路内の溶融液の、連続工程を停止
することになる、固化を防止する。この場合、バーナを
内通路に、すなわち転炉の半径方向取出孔に整合するほ
ぼ半径方向通路ならびに前記第１通路に対して角度をな
して配置された別の通路に向けることが有利であり、そ
こで均一な温度分布が確実に得られる。A plant for carrying out the method of the invention has a converter, in which a number of radially extending burner nozzles are provided in the converter in a plane near the bottom of the converter, and the air nozzles are higher than the converter. The converter is characterized in that it is provided in a separate plane at the same location and that the protruding take-off device is connected to the converter through a radial take-off hole. It is important for the device according to the invention that a protruding take-off device is connected to the converter by a radial take-off hole, said take-off device being able to do so even at small angles of inclination without allowing dripping. , improving the movement of the tilting action as far as the exchange of the ladle is concerned. This embodiment further includes a generally radial take-off device in which the protruding take-off device is aligned with a radial take-off hole in the converter, and a take-off passage extending generally parallel to the converter axis has a generally radial take-off passage. It is advantageous to be configured to be connected to a passage, such that the angular arrangement of the passage in the removal device is relevant only to small angles of inclination when changing the ladle and to improve the continuity of the process. It will be possible to install auxiliary equipment to maintain safety. A preferred further improvement is
The main feature is that the ejection device comprises at least one burner whose flame is directed into each one of the inner channels. Such a burner connected to a protruding type extraction device is
Prevents solidification of the melt in the passage during ladle replacement operations, which would stop the continuous process. In this case, it is advantageous to direct the burner into an inner passage, that is to say into a substantially radial passage aligned with the radial take-off hole of the converter, as well as a further passage arranged at an angle to said first passage; Therefore, a uniform temperature distribution can be reliably obtained.
本発明による装置を、取出＠置の平径方向取出孔に接続
された通路が、取出装置の転炉軸線に平行な通路の断面
積より、大きい障害のない断面積をもつように選択する
のが有利であり、半径方向の第１通路における溶融物の
ない空間にバーナを接続することができるようになる。The device according to the invention is selected in such a way that the passage connected to the radial take-off hole of the take-off unit has a larger clear cross-sectional area than the cross-sectional area of the passage parallel to the converter axis of the take-off device. is advantageous, making it possible to connect the burner to the melt-free space in the first radial path.
この場合、バーナノズルを溶融液の直接の影響なしに保
持づることが可能であり、またこの場合、配置はとくに
簡単な方法で、半径方向取出孔に接続された取出装置の
通路に、火炎軸線が相互に交差する２つのバーナおよび
閉鎖しつるサンプル採取開口を備えた通路が接続される
ように選択される。この通路に入る付加的に設けられた
サンプル開口は、工程を連続的に観察しかつ対応して望
ましい方法で転炉バーナを制御することができるように
なる。In this case, it is possible to hold the burner nozzle without direct influence of the melt, and the arrangement is particularly simple in this case, with the flame axis in the passage of the withdrawal device connected to the radial withdrawal hole. Two mutually intersecting burners and a passageway with a closed temple sampling opening are chosen to be connected. An additionally provided sample opening into this passage makes it possible to continuously observe the process and correspondingly control the converter burner in the desired manner.
可動とりべのとくに迅速な交換は、もし装置が突出型取
出装置の取出通路出口端が取出通路下方の位置に移動し
うるとりべ用カバーを支持するようなものであるならば
、可能であり、前記カバーは転炉と一緒に傾斜可能であ
り、またとりべを取出すのに適している。転炉に接続さ
れるつぎのとりべのカバーまたは、突出型取出装置のた
め、とりべの交換はとくに迅速に実施され、工程はきわ
めて短い時間だけ停止される。Particularly rapid replacement of the movable ladle is possible if the device is such that the outlet end of the removal channel of the projecting removal device supports a cover for the ladle which can be moved into a position below the removal path. , said cover can be tilted together with the converter and is also suitable for removing the ladle. Because of the cover of the next ladle connected to the converter or the protruding removal device, changing the ladle is carried out particularly quickly and the process is stopped for only a very short time.
転炉のバーナはｉ１索欠乏で作動するのが好ましく、そ
れは０．８から０．９までのλ値を生ずる。The converter burner is preferably operated with i1 starvation, which results in a λ value of 0.8 to 0.9.
天然ガス、とくに−酸化炭素およびメタンの未燃焼部分
は煙道ガスと一緒に上向ぎに流れ、二次空気を供給され
る平面の区域内で完全に燃焼する。The unburnt parts of the natural gas, in particular carbon oxides and methane, flow upwards together with the flue gas and are completely combusted in the area of the plane supplied with secondary air.
高炉と比較して、転炉の使用とりべを交換するとき簡単
な傾斜運動が可能であり、本発明による装置は現存する
転炉の構造を変更することにより、たとえばＬＤ転炉の
構造を変更することによって、実際上直ちに得ることが
できる。公知の傾斜可能な炉の構造と比較して、転炉の
傾斜ＩＩＪ能な懸架装置は転炉下方の空間への出入りを
いちじるしく容易にし、転炉底部に設けられた取出孔と
接続するのに必要な付随する操作がバーナを備えた突出
型取出装置に対しては回避される。Compared to a blast furnace, a simple tilting movement is possible when changing the use ladle of a converter, and the device according to the invention allows for changing the structure of existing converters, e.g. By doing so, you can obtain it practically immediately. Compared to known tiltable furnace constructions, the tiltable suspension system of the converter significantly facilitates access to the space below the converter and allows for connection with the take-off holes provided in the bottom of the converter. The necessary attendant operations are avoided for ejection-type ejection devices with burners.
以下、図面に基づいて本発明をさらに詳細に説明する。Hereinafter, the present invention will be explained in more detail based on the drawings.
図面には傾斜しつる転炉１が図示され、その揺動軸線は
符号２で示されている。天然ガスを燃焼するガスバーナ
４は、環状導管を通して転炉に接続され、また転炉底部
付近において前記バーナの火炎４はほぼ半径方向に転炉
内部に向けられている。転炉１は連続的にスクラップ６
を装入することができ、そのため装入シュート７が設け
られている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A tilting vine converter 1 is shown in the drawing, the oscillating axis of which is designated by the reference numeral 2. A gas burner 4 burning natural gas is connected to the converter through an annular conduit, and near the bottom of the converter the flame 4 of said burner is directed approximately radially into the converter interior. Converter 1 continuously scraps 6
can be charged, for which purpose a charging chute 7 is provided.
バーナ４によって形成されるバーナ平面上方には、二次
空気供給用の別の環状導管８が設けられている。バーナ
４が０．８〜０．９のλ値で不完全燃焼するため、供給
される燃料は二次空気の平面内で完全に燃焼される。A further annular conduit 8 for the secondary air supply is provided above the burner plane formed by the burner 4 . Since the burner 4 burns incompletely with a λ value of 0.8 to 0.9, the supplied fuel is completely combusted in the plane of the secondary air.
はぼ半径方向の通路１０を右する突出型取出袋ｕ９は、
転炉底部３に接続されている。この突出型取出装置９の
半径方向通路１０は、転炉１の半径方向取出孔１１と整
合し、はぼ垂直方向にまた転炉１の軸線１２に平行に延
びる通路１３に達している。はぼ半径方向の通路１０は
軸線１２に平行に延びる取出通路１３の断面積より大き
い断面積を有し、半径方向通路１０は溶融槽を排出する
とき完全に充満される必要はない。流出する溶融物上方
に自由空間が存在するならば、またバーナ１５．１６が
この自由空間に開放しバーナ軸線が互いに交差するなら
ば、有利である。バーナ１５は半径方向通路１０を加熱
するのに役立つ一方、バーナ１−６は固化金属による垂
直通路１３の詰まりを防止する。The protruding type retrieval bag u9 to the right of the passage 10 in the radial direction is
It is connected to the converter bottom 3. The radial passages 10 of this projecting take-off device 9 extend into passages 13 which are aligned with the radial take-off holes 11 of the converter 1 and extend approximately vertically and parallel to the axis 12 of the converter 1. The radial passage 10 has a cross-sectional area that is larger than the cross-sectional area of the removal passage 13 extending parallel to the axis 12, so that the radial passage 10 does not have to be completely filled when draining the melting tank. It is advantageous if there is a free space above the exiting melt and if the burners 15, 16 open into this free space and the burner axes intersect each other. Burners 15 serve to heat the radial passages 10, while burners 1-6 prevent clogging of the vertical passages 13 by solidified metal.
サンプル採取開口１７はさらに半径方向通路１０に接続
され、前記サンプル採取開口は溶融工程をｇＡ御するこ
とができる。A sampling opening 17 is further connected to the radial passage 10, said sampling opening being able to control the melting process.
カバー１８は突出型取出装置９に接続され、転炉１とと
もに揺動輪線２の周りに上向きに揺動し、突出型取出装
置９はとりべ１９がその下に移動するとき交換される。The cover 18 is connected to a protruding take-out device 9, which swings upwards together with the converter 1 around the swing ring 2, and the protruding take-out device 9 is replaced when the ladle 19 moves below it.
とりべ１９自体はＯ−ラ上で移動し、別のスラグうけ入
れ容１２１がスラブ分離のためとりぺ１９のシャシ上に
取付けられている。The ladle 19 itself moves on an O-ra and another slag receiving vessel 121 is mounted on the chassis of the ladle 19 for slab separation.
［発明の効果１
本発明は、火炎を転炉の内部にほぼ半径方向に向ける不
完全燃焼バーナによって装入物を転炉の底部付近で加熱
し、二次空気または酸素をバーナ平面Ｆ方のある距離に
供給して燃焼を完了し、転炉をとりべ交換のため溶融材
料の高さが取出孔の下になる位置まで回動されるように
することにより、転炉上方に所要量のスラグを保持する
とともに底部の溶融液を加熱することができ、転炉の作
業を連続的に実施することができる。[Effect of the invention 1] The present invention heats the charge near the bottom of the converter by means of an incomplete combustion burner that directs the flame almost radially into the converter, and directs the secondary air or oxygen toward the burner plane F. By supplying the material over a certain distance to complete combustion and rotating the converter until the height of the molten material is below the take-out hole for ladle replacement, the required amount is placed above the converter. It is possible to hold the slag and heat the molten liquid at the bottom, and the converter operation can be carried out continuously.
第１図は本発明の実施例を略図的に示す図である。
１・・・転炉、２・・・回動軸線、３・・・底、４・・
・不完全燃焼バーナ、６・・・スクラップ、７・・・装
入シュート、８・・・環状Ｓ管、９・・・突出型取出装
置、１０・・・半径方向通路、１１・・・半径方向取出
孔、１２・・・転炉軸線、１３・・・取出通路、１５．
１６・・・取出通路、１７・・・シンプル採取開口、１
８・・・カバー。FIG. 1 schematically shows an embodiment of the invention. 1... Converter, 2... Rotation axis, 3... Bottom, 4...
- Incomplete combustion burner, 6... Scrap, 7... Charging chute, 8... Annular S pipe, 9... Protruding type take-out device, 10... Radial direction passage, 11... Radius Directional take-out hole, 12... Converter axis, 13... Take-out passage, 15.
16... Retrieval passage, 17... Simple collection opening, 1
8...Cover.
Claims (7)
たは双方を溶融する方法であつて、該方法は、転炉（１
）が火炎を転炉内部にほぼ半径方向に向ける不完全燃焼
バーナ（４）によつて底部（３）付近で加熱されること
、燃焼を完了するため二次空気または酸素がバーナ平面
上方のある距離に供給されること、溶融物が、場合によ
りスラグと一緒に、転炉（１）の横方向に接続された取
出装置（９）を通して可動とりべ（１９）に排出される
ことおよび転炉（１）が、とりべ交換のため、溶融材料
の高さが取出孔の下になる位置まで回動されることを特
徴とする、前記方法。(1) A method of continuously melting one or both of scrap and pig iron in a converter, which method
) is heated near the bottom (3) by an incomplete combustion burner (4) which directs the flame approximately radially into the converter interior, with secondary air or oxygen above the burner plane to complete the combustion. the melt, optionally together with slag, is discharged into a movable ladle (19) through a take-off device (9) connected laterally to the converter (1) and the converter The method according to (1) above is characterized in that the ladle is rotated to a position where the height of the molten material is below the extraction hole in order to replace the ladle.
の底部（３）付近にある平面内で転炉（３）に設けられ
ること、空気ノズルが高い所にある別の平面内に設けら
れることおよび突出型取出装置（９）が半径方向取出孔
を通して転炉に接続されていることを特徴とする、請求
項１記載の方法を実施する装置。(2) A number of burner nozzles extending approximately in a radial direction are provided in the converter (3) in a plane near the bottom (3) of the converter, and air nozzles are provided in another plane at a higher location. 2. Device for carrying out the method according to claim 1, characterized in that the projecting take-off device (9) and the projecting take-off device (9) are connected to the converter through a radial take-off hole.
整合するほぼ半径方向通路（１０）を有すること、転炉
（１）の軸線（１２）に対してほぼ平行な取出通路（１
３）がほぼ半径方向の通路（１０）に接続されているこ
とを特徴とする、請求項２記載の装置。(3) the protruding take-off device (9) has a substantially radial passage (10) aligned with the radial take-off hole of the converter, the take-off passage being substantially parallel to the axis (12) of the converter (1); (1
3. The device according to claim 2, characterized in that 3) is connected to a substantially radial channel (10).
前記両通路（１０、１３）の各１方に向けた少なくとも
１つのバーナ（１５、１６）を有することを特徴とする
、請求項１、２または３記載の装置。(4) The protruding type extraction device (9) is characterized in that it has at least one burner (15, 16) which directs the flame toward each one of the passages (10, 13) of the extraction device (9). , a device according to claim 1, 2 or 3.
通路（１０）が、転炉（１）の軸線に対して平行に延び
る取出装置（９）の通路（１３）よりも大きい断面積を
有することを特徴とする、請求項１から４のいずれか１
項記載の装置。(5) The passage (10) of the extraction device (9) connected to the radial extraction hole is larger than the passage (13) of the extraction device (9) that extends parallel to the axis of the converter (1). Any one of claims 1 to 4, characterized in that it has a cross-sectional area.
Apparatus described in section.
１６）および閉鎖可能なサンプル採取開口（１７）が取
出装置（９）の通路（１０）に接続され通路（１０）が
半径方向取出孔に接続されたことを特徴とする請求項１
から５までのいずれか１項記載の装置。(6) Two burners (15,
16) and a closable sample collection opening (17) connected to a channel (10) of the withdrawal device (9), the channel (10) being connected to a radial withdrawal hole.
5. The device according to any one of 5 to 5.
路（１３）下方の位置に移動しうるとりベ（１９）のカ
バー（１８）を支持し、前記カバー（１８）が転炉（１
）と一緒に揺動してとりベを除去するようになつている
ことを特徴とする、請求項１から６のいずれか１項記載
の装置。(7) The outlet end of the take-out passage of the protrusion-type take-out device (9) supports a cover (18) of a ladle (19) that can be moved to a position below the take-out passage (13), and the cover (18) (1
7. The device according to claim 1, wherein the device is adapted to be swung together with the ladle to remove the ladle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT3341/87 | 1987-12-17 | ||
| AT0334187A AT389896B (en) | 1987-12-17 | 1987-12-17 | METHOD FOR CONTINUOUS MELTING OF SCRAP AND DEVICE FOR CARRYING OUT THIS METHOD |
| IN995CA1988 IN172351B (en) | 1987-12-17 | 1988-12-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01198415A true JPH01198415A (en) | 1989-08-10 |
| JPH0480086B2 JPH0480086B2 (en) | 1992-12-17 |
Family
ID=25599893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63318329A Granted JPH01198415A (en) | 1987-12-17 | 1988-12-16 | Method and apparatus for continuously melting scrap |
Country Status (14)
| Country | Link |
|---|---|
| US (2) | US4895594A (en) |
| EP (1) | EP0321443B1 (en) |
| JP (1) | JPH01198415A (en) |
| CN (1) | CN1017629B (en) |
| AR (1) | AR240338A1 (en) |
| AT (2) | AT389896B (en) |
| BR (1) | BR8806682A (en) |
| DD (1) | DD283420A5 (en) |
| DE (1) | DE3870835D1 (en) |
| ES (1) | ES2031283T3 (en) |
| GR (1) | GR3004717T3 (en) |
| IN (1) | IN172351B (en) |
| RU (1) | RU2015170C1 (en) |
| ZA (1) | ZA889001B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT394211B (en) * | 1990-07-16 | 1992-02-25 | Voest Alpine Stahl | PLANT FOR PRODUCING LIQUID METALS AND METHOD FOR PRODUCING A METAL MELT, IN PARTICULAR STEEL WITH THIS PLANT |
| AT395656B (en) * | 1990-11-19 | 1993-02-25 | Voest Alpine Ind Anlagen | SYSTEM FOR THE PRODUCTION OF LIQUID METALS |
| AT395174B (en) * | 1990-11-19 | 1992-10-12 | Voest Alpine Ind Anlagen | SYSTEM FOR THE PRODUCTION OF LIQUID METALS |
| US8277721B2 (en) * | 2005-06-29 | 2012-10-02 | Process Technology International, Inc. | Systems and methods for accessing a furnace melt |
| US7704444B2 (en) * | 2005-06-29 | 2010-04-27 | Process Technology International, Inc. | Method and apparatus for testing characteristics of a furnace melt |
| CN103060510A (en) * | 2013-01-01 | 2013-04-24 | 北京科技大学 | High scrap ratio smelting method by adopting gas to heat |
| CN106123574A (en) * | 2016-06-28 | 2016-11-16 | 阳谷祥光铜业有限公司 | A kind of oxygen blow converter and a kind of smelting process |
| RU2642446C1 (en) * | 2017-03-17 | 2018-01-25 | Открытое акционерное общество "НОВОШАХТИНСКИЙ ЗАВОД НЕФТЕПРОДУКТОВ"(ОАО "НЗНП") | Method for production of lubricant material |
| CN107557529B (en) * | 2017-09-21 | 2019-03-29 | 洛阳沃达节能科技有限公司 | A kind of U-shaped scrap heating system |
| CN109468429B (en) * | 2018-09-30 | 2023-12-12 | 河南太行全利重工股份有限公司 | Converter scrap steel preheating and conveying system |
| CN110186280B (en) * | 2019-05-17 | 2024-04-12 | 山东电亮亮信息科技有限公司 | Medium frequency induction furnace for controlling pouring of steel by side bottom pouring |
| CN111560491A (en) * | 2020-06-15 | 2020-08-21 | 沈阳科维润工程技术有限公司 | Integrated tilting waste steel preheating device |
| CN112899434B (en) * | 2021-01-21 | 2021-11-19 | 东北大学 | Scrap steel distributing device and method for horizontal continuous charging electric arc furnace |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS624810A (en) * | 1985-06-28 | 1987-01-10 | Nippon Kokan Kk <Nkk> | Refining furnace for iron making by melt reduction |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU54470A1 (en) * | 1967-09-13 | 1969-06-24 | ||
| GB1360793A (en) * | 1971-10-01 | 1974-07-24 | British Gas Corp | Metal melting furnace |
| JPS5594430A (en) * | 1979-01-11 | 1980-07-17 | Kawasaki Steel Corp | Separating and tapping device of molten metal and molten slag |
| GB2095701A (en) * | 1981-03-27 | 1982-10-06 | British Steel Corp | Preheating of steel scrap |
| DE3531261A1 (en) * | 1985-08-31 | 1987-03-12 | Kloeckner Cra Tech | Process and converter for the production of steel |
| AT384669B (en) * | 1986-03-17 | 1987-12-28 | Voest Alpine Ag | PLANT FOR PRODUCING STEEL FROM SCRAP |
| US4795139A (en) * | 1987-07-13 | 1989-01-03 | Intersteel Technology, Inc. | Apparatus for tapping slag-free steel from a continuous melting furnace |
-
1987
- 1987-12-17 AT AT0334187A patent/AT389896B/en not_active IP Right Cessation
-
1988
- 1988-11-30 ZA ZA889001A patent/ZA889001B/en unknown
- 1988-12-01 IN IN995CA1988 patent/IN172351B/en unknown
- 1988-12-01 US US07/278,543 patent/US4895594A/en not_active Expired - Fee Related
- 1988-12-06 AR AR31264088A patent/AR240338A1/en active
- 1988-12-14 EP EP19880890316 patent/EP0321443B1/en not_active Expired - Lifetime
- 1988-12-14 AT AT88890316T patent/ATE75781T1/en active
- 1988-12-14 DE DE8888890316T patent/DE3870835D1/en not_active Expired - Fee Related
- 1988-12-14 ES ES88890316T patent/ES2031283T3/en not_active Expired - Lifetime
- 1988-12-15 DD DD88323222A patent/DD283420A5/en not_active IP Right Cessation
- 1988-12-16 BR BR8806682A patent/BR8806682A/en not_active Application Discontinuation
- 1988-12-16 JP JP63318329A patent/JPH01198415A/en active Granted
- 1988-12-16 CN CN88108664A patent/CN1017629B/en not_active Expired
- 1988-12-16 RU SU4613091 patent/RU2015170C1/en active
-
1989
- 1989-10-30 US US07/428,774 patent/US4993689A/en not_active Expired - Fee Related
-
1992
- 1992-05-26 GR GR920401060T patent/GR3004717T3/el unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS624810A (en) * | 1985-06-28 | 1987-01-10 | Nippon Kokan Kk <Nkk> | Refining furnace for iron making by melt reduction |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA889001B (en) | 1989-08-30 |
| DD283420A5 (en) | 1990-10-10 |
| US4895594A (en) | 1990-01-23 |
| IN172351B (en) | 1993-06-26 |
| AT389896B (en) | 1990-02-12 |
| ATE75781T1 (en) | 1992-05-15 |
| CN1033529A (en) | 1989-06-28 |
| CN1017629B (en) | 1992-07-29 |
| EP0321443A3 (en) | 1990-01-17 |
| RU2015170C1 (en) | 1994-06-30 |
| ES2031283T3 (en) | 1992-12-01 |
| GR3004717T3 (en) | 1993-04-28 |
| DE3870835D1 (en) | 1992-06-11 |
| ATA334187A (en) | 1989-07-15 |
| BR8806682A (en) | 1989-08-29 |
| US4993689A (en) | 1991-02-19 |
| EP0321443B1 (en) | 1992-05-06 |
| EP0321443A2 (en) | 1989-06-21 |
| AR240338A1 (en) | 1990-03-30 |
| JPH0480086B2 (en) | 1992-12-17 |
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